Injection mould and method for making the same

Abstract

An injection mould which comprises at least five modules aligned with each other. The five modules correspond to a first mould module and a second mould module to form a product cavity, a drive module for driving of sliders, an engaging module adapted, by application of a force, to prevent dividing between the first and the second mould module when introducing product material into the product cavity, and an ejector module for ejecting a completed product from one of the first and the second mould module. The method for making injection moulds comprises the steps of receiving a product pattern, defining function holes and function recesses, and defining, separate from and parallel to the construction of function holes and function recesses, a product cavity and the parting plane of the mould. Moreover the method comprises the step of mechanically machining a plurality of modules essentially simultaneously.

What is claimed is:  
     
       1. A method for making an injection mould including a first mould half and a second mould half, the method comprising the steps of 
       receiving, in a computer based system, digital information relating to a shape of a product pattern,  
       placing digital information relating to the shape of the product pattern into a first digital mould pattern and into a second digital mould pattern, respectively, wherein the first digital mould pattern represents both the first mould half and the second mould half and wherein the second digital mould pattern represents both the first mould half and the second mould half,  
       defining function holes and function recesses in the first digital mould pattern,  
       defining, separate from and parallel to the step of defining function holes and function recesses, a product cavity and, a parting plane of the mould in the second digital mould pattern; and  
       machining said first mould half and said second mould half using said digital information in an NC machine.  
     
     
       2. A method as claimed in  claim 1 , further comprising the step of defining a coordinate system in the digital information relating to the shape of the product pattern before the steps of defining function holes and function recesses and defining the product cavity and the parting plane of the mould are carried out, the coordinate system being defined so that an origin of coordinates is available within a two-dimensional projection of the product pattern. 
     
     
       3. A method as claimed in  claim 2 , further comprising the steps of 
       generating machining data regarding function holes and function recesses from the first digital mould pattern for machining of the injection mould,  
       generating machining data regarding the product cavity and the parting plane of the mould from the second digital mould pattern for machining of the injection mould,  
       machining a blank for the injection mould by means of the machining data regarding function holes and function recesses independently of the machining data generated from the second mould pattern, and  
       machining a blank for the injection mould by means of the machining data regarding the product cavity and the parting plane of the mould independently of the machining data generated from the first mould pattern.  
     
     
       4. A method as claimed in  claim 1 , further comprising the steps of 
       generating machining data regarding function holes and function recesses from the first digital mould pattern for machining of the injection mould,  
       generating machining data regarding the product cavity and the parting plane of the mould from the second digital mould pattern for machining of the injection mould,  
       machining a blank for the injection mould by means of the machining data regarding function holes and function recesses independently of the machining data generated from the second mould pattern, and  
       machining a blank for the injection mould by means of the machining data regarding the product cavity and the parting plane of the mould independently of the machining data generated from the first mould pattern.  
     
     
       5. A method for making injection moulds for injection moulding of mobile phone components comprising the steps as claimed in  claim 1 .